#!/usr/bin/env node

const log=console.log,
      user={
        name:'zjy',
        age:20,
        qq:'1234567890@qq.com'
      }
log('name:\t%s',user.name);
//log('age:\t%d',user.age);
//log('age:\t'+user.age);
log('age:\t',user.age);
log('user:\t%j',user);

 
//log('name:\t%s\nage:\t%d\nuser:\t%j',user.name,user.age,user);

log('qq:%s',user.qq);
log('qq:',user.qq);
log('qq:'+user.qq);
log(`qq:${user.qq}`);

console.error('error message');

console.table(user);
